Proceedings of the Eighth International Conference on Enterprise Information Systems Acronym: ICEIS 2006 Event held on: May 23-27, 2006, in Paphos, Cyprus Editors: Yannis Manolopoulos 1 , Joaquim Filipe 2 , Panos Constantopoulos 3 and José Cordeiro 2 Affiliations: 1 Aristotle University, Greece , 2 Polytechnic Institute of Setúbal / INSTICC, Portugal , 3 Athens University of Economics and Business, Greece Vol. 1 - 978-972-8865-42-9 Vol. 2 - 978-972-8865-44-3 Vol. 3 - 978-972-8865-45-0 Vol. 4 - 978-972-8865-41-2 Vol. 5 - 978-972-8865-43-6